246 lines
9.2 KiB
Java
246 lines
9.2 KiB
Java
package androidx.constraintlayout.helper.widget;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.util.AttributeSet;
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import android.view.View;
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import androidx.constraintlayout.solver.widgets.ConstraintWidget;
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import androidx.constraintlayout.widget.ConstraintHelper;
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import androidx.constraintlayout.widget.ConstraintLayout;
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import androidx.constraintlayout.widget.R;
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public class Layer extends ConstraintHelper {
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private static final String TAG = "Layer";
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private boolean mApplyElevationOnAttach;
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private boolean mApplyVisibilityOnAttach;
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public float mComputedCenterX = Float.NaN;
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public float mComputedCenterY = Float.NaN;
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public float mComputedMaxX = Float.NaN;
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public float mComputedMaxY = Float.NaN;
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public float mComputedMinX = Float.NaN;
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public float mComputedMinY = Float.NaN;
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public ConstraintLayout mContainer;
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private float mGroupRotateAngle = Float.NaN;
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public boolean mNeedBounds = true;
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private float mRotationCenterX = Float.NaN;
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private float mRotationCenterY = Float.NaN;
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private float mScaleX = 1.0f;
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private float mScaleY = 1.0f;
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private float mShiftX = 0.0f;
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private float mShiftY = 0.0f;
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public View[] mViews = null;
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public Layer(Context context) {
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super(context);
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}
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public Layer(Context context, AttributeSet attributeSet) {
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super(context, attributeSet);
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}
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public Layer(Context context, AttributeSet attributeSet, int i) {
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super(context, attributeSet, i);
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}
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private void reCacheViews() {
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int i;
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if (!(this.mContainer == null || (i = this.mCount) == 0)) {
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View[] viewArr = this.mViews;
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if (viewArr == null || viewArr.length != i) {
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this.mViews = new View[i];
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}
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for (int i2 = 0; i2 < this.mCount; i2++) {
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this.mViews[i2] = this.mContainer.getViewById(this.mIds[i2]);
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}
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}
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}
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private void transform() {
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if (this.mContainer != null) {
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if (this.mViews == null) {
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reCacheViews();
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}
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calcCenters();
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double radians = Float.isNaN(this.mGroupRotateAngle) ? 0.0d : Math.toRadians((double) this.mGroupRotateAngle);
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float sin = (float) Math.sin(radians);
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float cos = (float) Math.cos(radians);
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float f = this.mScaleX;
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float f2 = f * cos;
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float f3 = this.mScaleY;
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float f4 = (-f3) * sin;
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float f5 = f * sin;
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float f6 = f3 * cos;
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for (int i = 0; i < this.mCount; i++) {
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View view = this.mViews[i];
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int left = view.getLeft();
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int top = view.getTop();
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float right = ((float) ((view.getRight() + left) / 2)) - this.mComputedCenterX;
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float bottom = ((float) ((view.getBottom() + top) / 2)) - this.mComputedCenterY;
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view.setTranslationX((((f4 * bottom) + (f2 * right)) - right) + this.mShiftX);
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view.setTranslationY((((f6 * bottom) + (right * f5)) - bottom) + this.mShiftY);
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view.setScaleY(this.mScaleY);
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view.setScaleX(this.mScaleX);
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if (!Float.isNaN(this.mGroupRotateAngle)) {
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view.setRotation(this.mGroupRotateAngle);
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}
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}
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}
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}
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public void calcCenters() {
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if (this.mContainer != null) {
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if (!(this.mNeedBounds || Float.isNaN(this.mComputedCenterX) || Float.isNaN(this.mComputedCenterY))) {
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return;
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}
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if (Float.isNaN(this.mRotationCenterX) || Float.isNaN(this.mRotationCenterY)) {
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View[] views = getViews(this.mContainer);
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int left = views[0].getLeft();
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int top = views[0].getTop();
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int right = views[0].getRight();
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int bottom = views[0].getBottom();
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for (int i = 0; i < this.mCount; i++) {
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View view = views[i];
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left = Math.min(left, view.getLeft());
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top = Math.min(top, view.getTop());
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right = Math.max(right, view.getRight());
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bottom = Math.max(bottom, view.getBottom());
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}
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this.mComputedMaxX = (float) right;
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this.mComputedMaxY = (float) bottom;
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this.mComputedMinX = (float) left;
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this.mComputedMinY = (float) top;
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if (Float.isNaN(this.mRotationCenterX)) {
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this.mComputedCenterX = (float) ((left + right) / 2);
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} else {
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this.mComputedCenterX = this.mRotationCenterX;
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}
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if (Float.isNaN(this.mRotationCenterY)) {
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this.mComputedCenterY = (float) ((top + bottom) / 2);
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} else {
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this.mComputedCenterY = this.mRotationCenterY;
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}
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} else {
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this.mComputedCenterY = this.mRotationCenterY;
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this.mComputedCenterX = this.mRotationCenterX;
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}
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}
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}
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@Override // androidx.constraintlayout.widget.ConstraintHelper
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public void init(AttributeSet attributeSet) {
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super.init(attributeSet);
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this.mUseViewMeasure = false;
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if (attributeSet != null) {
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TypedArray obtainStyledAttributes = getContext().obtainStyledAttributes(attributeSet, R.styleable.ConstraintLayout_Layout);
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int indexCount = obtainStyledAttributes.getIndexCount();
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for (int i = 0; i < indexCount; i++) {
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int index = obtainStyledAttributes.getIndex(i);
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if (index == R.styleable.ConstraintLayout_Layout_android_visibility) {
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this.mApplyVisibilityOnAttach = true;
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} else if (index == R.styleable.ConstraintLayout_Layout_android_elevation) {
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this.mApplyElevationOnAttach = true;
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}
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}
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obtainStyledAttributes.recycle();
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}
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}
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@Override // androidx.constraintlayout.widget.ConstraintHelper, android.view.View
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public void onAttachedToWindow() {
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super.onAttachedToWindow();
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this.mContainer = (ConstraintLayout) getParent();
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if (this.mApplyVisibilityOnAttach || this.mApplyElevationOnAttach) {
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int visibility = getVisibility();
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float elevation = getElevation();
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for (int i = 0; i < this.mCount; i++) {
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View viewById = this.mContainer.getViewById(this.mIds[i]);
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if (viewById != null) {
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if (this.mApplyVisibilityOnAttach) {
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viewById.setVisibility(visibility);
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}
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if (this.mApplyElevationOnAttach && elevation > 0.0f) {
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viewById.setTranslationZ(viewById.getTranslationZ() + elevation);
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}
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}
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}
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}
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}
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@Override // android.view.View
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public void setElevation(float f) {
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super.setElevation(f);
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applyLayoutFeatures();
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}
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@Override // android.view.View
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public void setPivotX(float f) {
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this.mRotationCenterX = f;
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transform();
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}
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@Override // android.view.View
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public void setPivotY(float f) {
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this.mRotationCenterY = f;
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transform();
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}
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@Override // android.view.View
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public void setRotation(float f) {
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this.mGroupRotateAngle = f;
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transform();
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}
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@Override // android.view.View
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public void setScaleX(float f) {
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this.mScaleX = f;
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transform();
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}
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@Override // android.view.View
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public void setScaleY(float f) {
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this.mScaleY = f;
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transform();
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}
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@Override // android.view.View
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public void setTranslationX(float f) {
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this.mShiftX = f;
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transform();
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}
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@Override // android.view.View
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public void setTranslationY(float f) {
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this.mShiftY = f;
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transform();
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}
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@Override // android.view.View
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public void setVisibility(int i) {
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super.setVisibility(i);
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applyLayoutFeatures();
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}
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@Override // androidx.constraintlayout.widget.ConstraintHelper
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public void updatePostLayout(ConstraintLayout constraintLayout) {
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reCacheViews();
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this.mComputedCenterX = Float.NaN;
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this.mComputedCenterY = Float.NaN;
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ConstraintWidget constraintWidget = ((ConstraintLayout.LayoutParams) getLayoutParams()).getConstraintWidget();
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constraintWidget.setWidth(0);
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constraintWidget.setHeight(0);
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calcCenters();
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layout(((int) this.mComputedMinX) - getPaddingLeft(), ((int) this.mComputedMinY) - getPaddingTop(), getPaddingRight() + ((int) this.mComputedMaxX), getPaddingBottom() + ((int) this.mComputedMaxY));
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transform();
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}
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@Override // androidx.constraintlayout.widget.ConstraintHelper
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public void updatePreDraw(ConstraintLayout constraintLayout) {
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this.mContainer = constraintLayout;
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float rotation = getRotation();
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if (rotation != 0.0f) {
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this.mGroupRotateAngle = rotation;
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} else if (!Float.isNaN(this.mGroupRotateAngle)) {
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this.mGroupRotateAngle = rotation;
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}
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}
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}
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